Guiding device for ejected shuttles



Nov. 28, 1933. R. e. TURNER GUIDING DEVICE FOR EJECTED SHUTTLES Filed March 22., 1932 2 Sheets-Sheet l Qnfienior' Richard. (Bu Turner f r fittorneqs R. G. TURNER GUIDING DEVICE FOR EJECTED SHUTTLES 2 Sheets-Sheet 2 Nov. 28, 1933.

Filed March 22. 1932 FIE-E R2 lb \7 r, I \5 g 35 35 r\ so; I O

I I I I 1 I I I I I l I I I B I R'\ chard. G .Turner Patented Nov. 28, 1933 NT ore-1 c F.

1,937,449 .GUIDING DEVICE FOR EJECTED SHUTTLES Richard Greenleaf Turner, Worcester, Mass, as-

signor to Cromptou & Knowles Loom Works, Worcester, Mass., a corporation of Massachusetts Application March 22, 1932'. Serial No. 600,469 Claims. (01.139-227) This invention relates to looms in which automatic mechanism is provided for changing shuttles upon substantial weft exhaustion. In such looms, it is .desirable that the ejected shuttle be kept from rolling over during ejection, thus entangling the outgoing weft.

It is the general object of my invention to provide an improved. guiding device for the ejected shuttle, by which turning movementof the shuttle as it falls will be substantially eliminated.

My improved guiding device preferably operaates in conjunction with-a device onthe lay which insures that the outer or delivery end of the ejected shuttle will fall first.

My invention further relates to arrangements and combinations of parts which willbe hereinafter described and more particularly pointed out in the appended claims.

A'preferred form of the invention is shown in the drawings, in which Fig. 1 is a front elevation of parts of a shuttlechanging loom embodying my improvements;

7 Fig. 2 is an end elevation, partly in section, of the mechanism shown in Fig. 1;

Fig. 3 is a detail sectional end elevation, showing certain of the parts appearing in Fig. 2 but.

in a different position; Fig. 4 is a detail sectional view, taken along the line 44 in Fig. 3, and

Fig. 5 is a diagrammatic view, looking in the direction of the arrow 5 in Fig. 2.

Referring to the drawings, I have shown certain portions of a shuttle-changing loom including a loom frame 10, a shuttle storage magazine M, a box B for the ejected shuttles, and a lay 12 supported on swords 13 and having a fixed back box plate 14 and a movable front box plate 15 which collectively form a box on the lay 12 for a shuttle S.

The front box plate 15 is mounted on arms or levers 16, pivoted at 1'7 and actuated to raise the box plate 15 upon substantial weft exhaustion by a link 18 connected to suitable actuating mechanism (not shown). An ejector 20 is mounted on a pivot 21 fixed relatively to the lay 12 and is provided with a contact screw 22 engaged by a surface 23 moved by the arms 16 as the arms are raised to lift the box plate 15. When thus engaged, the ejector 20 is moved forward through a slot in the back box plate 14 (Fig. 3) and pushes the shuttle S forward out of the shuttle box. The parts thus far described are of a usual commercial construction.

An apron or shield is secured along its upper edge to the front of the lay 12 and its lower stantially parallel to the plane of the apron portion is guided over a cross bar 31 supported on lateral projeotionsBZ of the box 3;; A stud.

33 is mounted inthe frontof the lay 12 and is engaged ,by' that end of the shuttle S nearer the cloth selvage as the shuttleis ejected.

My improved shuttleguiding-device is assem bled on a stud 35 supported'onzabracket 36 (Fig.- 2) which in turn is secured to the front of the lay :12. The stud 35 is positioned at suchan angle that it is substantially perpendicular to the plane of the apron or shield 30 when the lay is at back center, where it remains during the ejection and replacement of the exhausted shuttle.

My improved guiding device comprises a con-; tact arm 40 having hub portions 41 pivotedon; the stud 35, and a pair of parallel guiding rods- 42 firmly secured to said hub portions 41. A double-ended coil spring 45 is mounted on the stud 35 and the middle loop of the spring en- I mentof a portion 48 (Fig.4) of the arm 40 withthe projecting lower end of the cross-pin 46. The arm 40 and rods42 are thus mounted tov move togetherand to swing yieldingly-in planes subshield 30 during shuttle ejection.

The operation of the device isv very simple and will be readily apparent by reference to Fig. 5 As the shuttle S is forced forward by the ejector 20, the inner end of the shuttle S will engage the stud 33 fixed in the lay, and the opposite or outer end of the shuttle will beginto fall; asindicated in full lines in Fig. 5. The shuttle S will move downward between the parallel rods 42 untilitengages the contact arm 40.

Further falling movement of the shuttle S will force the arm 40. out of the path of the shuttle, but in so doing the'parallel rods 42 will also be swung downward, crossing the shuttle S at each side thereof and effectively preventing any turning or rolling movement of the shuttle. The shuttle will thus be forced to slide downward in a plane substantially parallel to the shield 30, and will be guided downward by the rods 42 for a sufficient distance .to obliterate any tendency of theshuttle to turn or roll during its further fallingmovement. J I Consequently the shuttle will be deposited in the box B'without rolling or turning and all chance of entangling the outgoing weft with the falling huttle is substantially avoided. The

outgoing weft is substantially avoided.

occasional entangling of the outgoing'weft withthe falling shuttle has been found seriously objec tionable in the weaving of fine fabrics such as silk or rayon, as the slight increase in weft tension occasioned by such entanglement produces a variation in the appearance of the cloth which may be distinctly visible in the finished fabric. By the provision of the simpie guiding device above described, all turning or rolling of the shuttle isprevented and the entangling of the Having thus described my invention and the advantages thereof, I do not wishto be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is v 1, In a 106m, a lay having a removable box plate, means to move a shuttle transversely of said lay to a position for free fall when said box plate is moved to inoperative position, a storage for ejected shuttles, and a guiding device mounted on the lay and engaging the ejected shuttle to prevent rolling thereof during its fall from its transversely removed positionto the shuttle storage, said guiding device-comprising spaced guid- 1 'ing portions engaging the front and rear sides of the ejected shuttle and between which said shuttle passes in its fall.

2. In a loom, a layhaving a removable box plate, means to move a shuttle transversely of said lay to a position for free fall when said box plate is moved to inoperative position, a storage for ejected shuttles, and a guiding device mount ed on the lay and engaging the ejected shuttle to prevent rolling thereof during its fall from its transversely removed position to the shuttle storage, said guiding device being movable by and with the ejected falling shuttle.

3. Ina loom, a lay having a removable box plate, means to move a shuttle transversely of said lay to a position'for free fall when said box plate is moved to inoperative position, a storage for ejected shuttles, and a guiding device mounted on the lay and engaging the ejected shuttle to prevent rolling thereof during its fall fromits 1 transversely removed position to the shuttle stor-f I of the ejected shuttle, and a shuttle-guiding device pivot'ally mounted on the lay adjacent the pathof fallen movement of the other end of the ejectedshuttle and engaged and moved by said shuttle in its fall.

5. The combination in a loom as set forth in claim: 6, in which the shuttle-guiding device ineludes anarm portion positioned for engagement and movement by the adjacent end of the ejected fallingshuttle, and a pair. of parallel guide rods movable with said arm when said arm is thus engaged by the shuttle.

6. The combination in a loom as set forth in claim 6, in which the shuttle-guiding device inand movement by the adjacent end of the ejected falling shuttle, and a pair of parallel guide rods movable with said arm when said arm is thus engaged by the shuttle, said parallel arms and said shuttle crossing each other at varying angles during the fall of the shuttle but being in continuous engagement,

7. In a loom, a lay having a removable box plate, means to eject a shutt1e.transversely of said lay when said box plate is moved to inoperative position, a storage for ejected shuttles, and a guiding device pivoted on the lay and compriseludes an armportion positioned for engagement ing a member'engaged by the adjacent end of the ejected'falling shuttle, a pair of spacedguiding portions engaging upper and lower surfaces of said falling shuttle, a pivotal support for said guiding device on said lay, and a spring by which said device is yieldingly returned to normal raised position after each shuttle ejection. 8. The combination in a loom as ing angles diagonally across and between the spaced guiding portions of said guiding device.

9. in a loom, a lay having a removable box plate, means to eject a shuttle transversely of said lay when said box plate is moved to inoperative position, a storage for ejected shuttles, a retarding device on the front of said layfor one end of the ejected falling shuttle, a stud on said lay adjacent the opposite end of said shuttle, and a shuttle-guiding device pivotedon said stud and swingingiin a plane substantially parallel to a surface joining the, layvat back center to the rear top edge of said shuttle storage. l V

' 10. The combination in a loom as set forth in claim 11, in which the guiding device has spaced guiding portions betweenwhich the shuttle passes at varying oblique angles during its falling move ment. 1 l I 1 RICHARD GREENLEAF TURNER.

, set forth in claim. 9, in which an additional device on the lay 

